Updated on Jun 28, 2019: Jul 15-16, 2019 will be Amazon Prime Day with lots of great deals. Don't forget to use this GCR rebate. Exclusively for Prime members.
You can earn 10% cash back for amazon.ca purchases in the categories of Home, Apparel, Kitchen, Beauty, Shoes & Accessories, Luggage, Jewelry, Watches and Beauty, if you do it through GCR. Besides, you can get the GCR bonus even if you pay the purchases with Amazon Gift Card. Therefore, you can buy Amazon Gift Card from grocery stores with AmEx Cobalt card and earn extra ~5% bonus. Totally, you can get up to ~15% cash back for Amazon eligible purchases.